Washington IFTA Calculator
Example rate: ~$0.595/gallon. Enter your actual miles and gallons below to estimate what you owe.
Rates shown are illustrative example rates for this demo calculator. Pull current quarterly rates from IFTA Inc. before filing.
| State | Taxable Gal. | Tax Owed |
|---|---|---|
| WA | 600.0 | $357.00 |
Running Freight Through Washington
Seattle and Tacoma Port Drayage
The ports of Seattle and Tacoma handle a huge volume of container traffic, and drayage runs moving those containers to warehouses along I-5 and I-405 make up a large share of Washington's commercial truck activity around Puget Sound.
Cascade Mountain Pass Chain Requirements
Passes like Snoqualmie on I-90 and Stevens Pass can require chains for trucks during winter storms, sometimes with little advance notice. Carriers running east-west across Washington in winter should check pass conditions before departing rather than assuming clear roads.
Canadian Border Crossing at Blaine
Washington's border crossing at Blaine handles significant cross-border freight moving between the Pacific Northwest and British Columbia. Carriers running north out of Washington should have customs paperwork and cross-border compliance in order before reaching the line to avoid delays.
IFTA and Trucking in Washington: What to Know
Washington combines two major container ports, Seattle and Tacoma, with mountain passes on I-90 and US routes that can require chains for a good chunk of the year, plus a busy commercial border crossing into Canada at Blaine. The state's fuel tax rate is among the highest in the country, and carriers running port drayage, cross-border freight, or mountain routes through the Cascades all face different planning challenges within the same state.
IFTA Filing for Washington Miles
Washington participates in IFTA the same as every other member jurisdiction, so a carrier based elsewhere reports Washington miles and any fuel purchased in state on their regular quarterly return through their base state rather than filing separately with Washington. Because Washington's fuel tax rate runs high, it's worth double-checking fuel receipts and odometer records for Washington legs specifically, since a reporting error here has a bigger dollar impact than the same mistake in a lower-rate state.
Port Drayage and Weigh Station Enforcement
Washington runs fixed weigh stations along I-5 and I-90, and the volume of drayage traffic moving containers out of Seattle and Tacoma keeps local truck activity heavy around Puget Sound even outside of long-haul freight.
The Washington State Patrol also conducts mobile enforcement statewide, and given the mix of port drayage, cross-border, and mountain pass traffic the state sees, carriers should keep registration, IFTA, and load paperwork current no matter which corridor they're running.
Mountain Passes and Cross-Border Freight
Snoqualmie Pass on I-90 and Stevens Pass carry real winter risk, with chain requirements that can go into effect during active storms and occasionally close the pass entirely until conditions improve.
Carriers running freight north to the Blaine border crossing into British Columbia should have customs paperwork, cross-border permits, and load documentation ready in advance, since delays at the border can cost more time than the drive itself.
Seasonal Weather from the Coast to the Cascades
Washington's weather changes dramatically depending on where a route runs. West of the Cascades, around Seattle and Tacoma, winters are mild but wet, with rain and occasional wind events rather than heavy snow. East of the mountains, and on the passes themselves, winter brings real snow, ice, and chain requirements that can catch drivers used to the coastal climate off guard. Carriers running routes that cross the Cascades should check conditions on both sides of the mountains separately, since a clear morning in Seattle says nothing about conditions at Snoqualmie Summit.
Other West States
Carriers Running Washington Freight
“Port drayage out of Tacoma is steady work, but I still budget extra for Snoqualmie Pass every winter. One storm and the whole schedule shifts.”
“Cross-border runs up to Blaine pay well, but only if the paperwork is right before I get there. I never leave without double-checking it now.”